H.264 / AVC / MPEG-4 part10 codec. More...

#include "libavutil/buffer.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/thread.h"
#include "cabac.h"
#include "error_resilience.h"
#include "h264_parse.h"
#include "h264_ps.h"
#include "h264_sei.h"
#include "h2645_parse.h"
#include "h264chroma.h"
#include "h264dsp.h"
#include "h264pred.h"
#include "h264qpel.h"
#include "internal.h"
#include "mpegutils.h"
#include "parser.h"
#include "qpeldsp.h"
#include "rectangle.h"
#include "videodsp.h"

Classes
struct	MMCO
	Memory management control operation. More...

struct	H264Picture

struct	H264Ref

struct	H264SliceContext

struct	H264Context
	H264Context. More...

Macros
#define	H264_MAX_PICTURE_COUNT 36

#define	MAX_MMCO_COUNT 66

#define	MAX_DELAYED_PIC_COUNT 16

#define	ALLOW_INTERLACE

#define	FMO 0

#define	MAX_SLICES 32
	The maximum number of slices supported by the decoder. More...

#define	MB_MBAFF(h) (h)->mb_mbaff

#define	MB_FIELD(sl) (sl)->mb_field_decoding_flag

#define	FRAME_MBAFF(h) (h)->mb_aff_frame

#define	FIELD_PICTURE(h) ((h)->picture_structure != PICT_FRAME)

#define	LEFT_MBS 2

#define	LTOP 0

#define	LBOT 1

#define	LEFT(i) (i)

#define	FIELD_OR_MBAFF_PICTURE(h) (FRAME_MBAFF(h) \|\| FIELD_PICTURE(h))

#define	CABAC(h) (h)->ps.pps->cabac

#define	CHROMA(h) ((h)->ps.sps->chroma_format_idc)

#define	CHROMA422(h) ((h)->ps.sps->chroma_format_idc == 2)

#define	CHROMA444(h) ((h)->ps.sps->chroma_format_idc == 3)

#define	MB_TYPE_REF0 MB_TYPE_ACPRED

#define	MB_TYPE_8x8DCT 0x01000000

#define	IS_REF0(a) ((a) & MB_TYPE_REF0)

#define	IS_8x8DCT(a) ((a) & MB_TYPE_8x8DCT)

#define	LIST_NOT_USED -1

#define	PART_NOT_AVAILABLE -2

#define	FRAME_RECOVERED_IDR (1 << 0)
	We have seen an IDR, so all the following frames in coded order are correctly decodable.

#define	FRAME_RECOVERED_SEI (1 << 1)
	Sufficient number of frames have been decoded since a SEI recovery point, so all the following frames in presentation order are correct.

#define	LUMA_DC_BLOCK_INDEX 48

#define	CHROMA_DC_BLOCK_INDEX 49

Typedefs
typedef enum MMCOOpcode	MMCOOpcode
	Memory management control operation opcode.

typedef struct MMCO	MMCO
	Memory management control operation.

typedef struct H264Picture	H264Picture

typedef struct H264Ref	H264Ref

typedef struct H264SliceContext	H264SliceContext

typedef struct H264Context	H264Context
	H264Context.

Enumerations
enum	MMCOOpcode { MMCO_END = 0, MMCO_SHORT2UNUSED, MMCO_LONG2UNUSED, MMCO_SHORT2LONG, MMCO_SET_MAX_LONG, MMCO_RESET, MMCO_LONG }
	Memory management control operation opcode.

Functions
int	ff_h264_get_slice_type (const H264SliceContext *sl)
	Reconstruct bitstream slice_type.

int	ff_h264_alloc_tables (H264Context *h)
	Allocate tables. More...

int	ff_h264_decode_ref_pic_list_reordering (H264SliceContext sl, void logctx)

int	ff_h264_build_ref_list (H264Context h, H264SliceContext sl)

void	ff_h264_remove_all_refs (H264Context *h)

int	ff_h264_execute_ref_pic_marking (H264Context *h)
	Execute the reference picture marking (memory management control operations).

int	ff_h264_decode_ref_pic_marking (H264SliceContext sl, GetBitContext gb, const H2645NAL nal, void logctx)

void	ff_h264_hl_decode_mb (const H264Context h, H264SliceContext sl)

void	ff_h264_decode_init_vlc (void)

int	ff_h264_decode_mb_cavlc (const H264Context h, H264SliceContext sl)
	Decode a macroblock. More...

int	ff_h264_decode_mb_cabac (const H264Context h, H264SliceContext sl)
	Decode a CABAC coded macroblock. More...

void	ff_h264_init_cabac_states (const H264Context h, H264SliceContext sl)

void	ff_h264_direct_dist_scale_factor (const H264Context const h, H264SliceContext sl)

void	ff_h264_direct_ref_list_init (const H264Context const h, H264SliceContext sl)

void	ff_h264_pred_direct_motion (const H264Context const h, H264SliceContext sl, int *mb_type)

void	ff_h264_filter_mb_fast (const H264Context h, H264SliceContext sl, int mb_x, int mb_y, uint8_t img_y, uint8_t img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize)

void	ff_h264_filter_mb (const H264Context h, H264SliceContext sl, int mb_x, int mb_y, uint8_t img_y, uint8_t img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize)

int	ff_h264_field_end (H264Context h, H264SliceContext sl, int in_setup)

int	ff_h264_ref_picture (H264Context h, H264Picture dst, H264Picture *src)

void	ff_h264_unref_picture (H264Context h, H264Picture pic)

int	ff_h264_slice_context_init (H264Context h, H264SliceContext sl)
	Init context Allocate buffers which are not shared amongst multiple threads.

void	ff_h264_draw_horiz_band (const H264Context h, H264SliceContext sl, int y, int height)

int	ff_h264_decode_slice_header (H264Context h, H264SliceContext sl, const H2645NAL *nal)

int	ff_h264_queue_decode_slice (H264Context h, const H2645NAL nal)
	Submit a slice for decoding. More...

int	ff_h264_execute_decode_slices (H264Context *h)
	Call decode_slice() for each context. More...

int	ff_h264_update_thread_context (AVCodecContext dst, const AVCodecContext src)

void	ff_h264_flush_change (H264Context *h)

void	ff_h264_free_tables (H264Context *h)

void	ff_h264_set_erpic (ERPicture dst, H264Picture src)

Variables
const uint16_t	ff_h264_mb_sizes [4]

Detailed Description

H.264 / AVC / MPEG-4 part10 codec.

Author: Michael Niedermayer micha.nosp@m.elni.nosp@m.@gmx..nosp@m.at

Macro Definition Documentation

§ MAX_SLICES

#define MAX_SLICES 32

The maximum number of slices supported by the decoder.

must be a power of 2

Function Documentation

§ ff_h264_alloc_tables()

int ff_h264_alloc_tables ( H264Context * h )

Allocate tables.

needs width/height

§ ff_h264_decode_mb_cabac()

int ff_h264_decode_mb_cabac	(	const H264Context *	h,
		H264SliceContext *	sl
	)

Decode a CABAC coded macroblock.

Returns: 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR on error

Decode a CABAC coded macroblock.

Returns: 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR if an error is noticed

§ ff_h264_decode_mb_cavlc()

int ff_h264_decode_mb_cavlc	(	const H264Context *	h,
		H264SliceContext *	sl
	)

Decode a macroblock.

Returns: 0 if OK, ER_AC_ERROR / ER_DC_ERROR / ER_MV_ERROR on error

§ ff_h264_execute_decode_slices()

int ff_h264_execute_decode_slices ( H264Context * h )

Call decode_slice() for each context.

Parameters

h	h264 master context

§ ff_h264_queue_decode_slice()

int ff_h264_queue_decode_slice	(	H264Context *	h,
		const H2645NAL *	nal
	)

Submit a slice for decoding.

Parse the slice header, starting a new field/frame if necessary. If any slices are queued for the previous field, they are decoded.

Classes

Macros

Typedefs

Enumerations

Functions

Variables